*{
	margin: 0;
	padding: 0;
	/* border: 1px solid red; */
}
body{
	background-color: #f0f0f0;
}

.kuang{
	width: 40%;
	height: 500px;
	border: 1px solid white;
	margin: 100px auto;
	background-color: white;
	border-radius: 5px;
	margin-bottom: 10px;
}
.center{
	width: 70%;
	height: 400px;
	margin: 60px auto;

}
#inp1,#inp2{
	width: 40%;
	height: 30px;
	margin: 0 auto;
	margin-top: 45px;
}
#btn1{
	height: 50px;
	width: 50%;
	position: relative;
	top: 40px;
	left: 10px;
	background-color: #4ea4dc;
	color: white;
	border: 1px solid white;
	border-radius: 5px;
}
#denglu{
	font-size: 30px;
	font-family:"微软雅黑";
	margin-top: 30px;
	text-align: center;
}
